Actually, when I was doing research for the fic, I was surprised to find that's a common misconception. Sleep is fine, they just need to be woken up every few hours in order to be monitored and make sure no symptoms indicating more serious injury arise.

by the way, did you read the comment I left you on your journal about the fic? I dont have a fimfiction account, so I couldn't really comment on there (without being notified of a reply), but I wanted to let you know how much I enjoyed Composure, so I left a comment on here! XD I'm eagerly awaiting chapter five, can't wait to see where the story leads!